BMW E60 E61 E90 E91 Door Lock Latch Mechanism Actuator Rear Left N/S 4389475

BMW E60 E61 E90 E91 Door Lock Latch Mechanism Actuator Rear Left N/S is an original component from the Locks and Latches category, designed for installation in the rear left section of the vehicle body. It ensures the proper operation of the central locking system, smooth latching, and secure door opening, which translates into comfort during daily use of your BMW.

Specifications and technical data

• SKU: 4389475-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 4389475
• Substitutable numbers: 51227202147, 7202147, 51227060295, 7060295, 51224389475, 4389475
• Location on the vehicle: Rear, Left
• Part type: Door Lock
• Category: Exterior Locks & Lock Hardware

Purpose and function of the BMW door lock

The presented actuator mechanism is designed to operate the rear left door, responsible for precise locking and unlocking within the central locking system. The component integrates both the mechanical part and the actuator assembly, allowing it to work with the vehicle's electrical installation and comfort system, ensuring consistent operation with other locks in the car. Thanks to the factory design tailored to a specific position on the vehicle, the lock maintains the correct geometry of mounts, cable positioning, and contact points with the handle and cylinder, which facilitates installation and reduces the risk of leaks or improper door operation.

Construction and body compatibility

The mechanism has been designed specifically for BMW 5 Series and 3 Series platforms, which means compatibility with the door structure, guides, and factory mounting points. The applied lock architecture enables cooperation with the factory central locking system, child safety lock, and vehicle security system, in accordance with the solutions used by the manufacturer. Proper fitment to the rear left side of the body translates into:

• correct alignment with the door panel and seals,
• proper latch operation relative to the body pillar,
• stable mounting without the need for modifications.

Benefits of using an original lock

Using an original door lock in a BMW allows you to maintain the factory operating parameters of the locking system. This is a particularly beneficial solution when symptoms such as locking problems, lack of response to remote commands, or irregular door opening occur. Replacing it with the correct actuator mechanism helps restore:

• consistent central locking operation on all doors,
• stable locking while driving and when parked,
• proper cooperation with the comfort and security system. This improves both daily convenience and the level of passenger safety in the rear part of the vehicle.

Characteristics of the used component

The offered door lock is a used part, sourced from dismantling, which represents a reasonable compromise between cost and functionality. Such components are frequently chosen for maintenance repairs when it is crucial to restore system efficiency while maintaining compliance with the vehicle's factory design. A used mechanism allows for reduced service costs while maintaining the original character of the installation.

Selection and integration with the vehicle system

When selecting a door lock, it is important to pay attention to compatibility with the specific body generation and placement on the vehicle. This model is intended for the rear left side, which is significant for the correct operation of cables, handles, and locks. A properly selected component facilitates plug-in installation in place of the old lock, without the need for modifying the installation or door structure. If you are planning a comprehensive repair or upgrade of the door locking zone in your BMW and need other elements from the same group, such as latching mechanisms, actuators, or lock cylinders, check the available parts in the BMW Locks and Latches category. To better plan the use of dismantled parts in your car and learn practical tips on choosing used components, it is worth reading the guide: Second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?